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Semtech Corporation RCLAMP0502BATCT
- Part No.:
- RCLAMP0502BATCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SC-75, SOT-416
- Datasheet:
-
RCLAMP0502BATCT.pdf
- Description:
- TVS DIODE 5VWM 25VC SC75
- Quantity:
- Payment:
- Shipping:
Inventory:12,606
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Product details
Overview
RCLAMP0502BATCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP0502BATCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC vs. IPP behavior, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards in high-voltage bus protection.
Technical Context
RCLAMP0502BATCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) across 24–40A peak pulse current and −40°C to +125°C operating temperature due to decreasing RDS(on) under surge conditions.
The device implements a three-terminal input-to-ground architecture with parallel-connected pins (IN: Pins 4/5/6; GND: Pins 1/2/3) to minimize parasitic inductance and maximize surge current handling. Its solid-state design avoids junction-limited thermal derating, enabling stable performance in USB PD and industrial load switch inputs where voltage overshoot must stay below 28V regardless of ambient temperature or surge magnitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - Maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs + 1.2/50μs combo wave) - Ensures downstream 24V-rated controllers (e.g., USB PD ICs) remain below damage threshold during worst-case surges. |
| Peak Pulse Current | 40 A (tp = 8/20μs) - Supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) on unsymmetrical lines. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Eliminates need for secondary ESD staging in USB Type-C connector interfaces. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping curve; reduces voltage rise per amp of surge current versus TVS diodes (which exhibit linear VC = VBR + IPP × RDYN). |
| Junction Capacitance | 175 pF at 22V, 1MHz - Compatible with 22V bus protection where signal integrity impact is secondary to robustness (e.g., VBUS, load switch IN). |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); parallel connection ensures uniform current sharing and low impedance path to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28 V across full 24–40A IPP range and −40°C to +125°C - eliminates thermal derating uncertainty in industrial environments. |
| Surge-rated FET protection core | Replaces PN-junction TVS with low-RDS(on) shunt switch - avoids junction heating failure mode and enables higher energy absorption per unit area. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz bursts) - protects against repetitive fast transients in motor drives and PLC I/O modules. |
| Low dynamic resistance | 20 mΩ - limits voltage overshoot rise rate (dV/dt) during surge onset, reducing stress on downstream gate drivers and regulators. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBUS line of a USB Type-C receptacle supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary high-energy EOS suppressor placed directly at the connector, clamping transients before they reach the PD controller and buck converter. Use Value: Maintains clamping at ≤28V across temperature and current - prevents overvoltage damage to 24V-rated PD controllers even at 125°C ambient. |
Use Scenario: Front-end protection for industrial-grade load switches (e.g., HS2950P) powering remote sensors, actuators, or metering circuits subject to lightning-induced surges. IC Role / Device Role / Timing Role: Surge diverter placed between input supply and load switch VIN pin, limiting transient voltage to protect internal FET gate oxide. Use Value: 40A peak pulse rating and stable 28V clamping ensure the load switch's absolute maximum VIN rating (typically 28–30V) is never exceeded during IEC 61000-4-5 events. |
| IoT Device Power Bus Protection | Storage Device 22V Rail Protection |
|
Use Scenario: Securing the main 22V input rail of battery-powered IoT gateways with cellular/Wi-Fi connectivity, deployed in outdoor enclosures vulnerable to ESD and EFT. IC Role / Device Role / Timing Role: Single-point, high-reliability EOS suppressor replacing multi-device TVS arrays to reduce BOM count and PCB area. Use Value: 175pF capacitance and 22V working voltage match typical 22V system rails; ±4kV EFT rating guards against switching noise in shared power domains. |
Use Scenario: Protecting the 22V auxiliary power rail in NVMe SSD enclosures or enterprise storage backplanes handling hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Bus-level transient suppressor on the 22V supply feeding PMICs and interface buffers, co-located near power entry connector. Use Value: Compact DFN-6 footprint (1.6×1.6mm) enables placement adjacent to connectors without compromising routing space for high-speed data lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs, identical DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. RCLAMP0502BATCT's standard reel quantity). | No functional difference; suitable for same USB PD, load switch, and industrial 22V bus use cases. | Select TDS2211P.C when sourcing from Semtech's direct channel with standard reel size requirement. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping (35.5V), no flat VC vs. IPP behavior, junction-limited thermal performance. | Acceptable only where 35.5V clamping is within downstream IC tolerance and ambient temperature stays <85°C. | Choose SMAJ22A only for cost-sensitive, non-temperature-critical 22V protection where clamping margin >7V is acceptable. |
Compared with RCLAMP0502BATCT, TDS2211P.C offers identical protection performance with packaging variation, while SMAJ22A trades clamping accuracy and temperature stability for lower cost and wider distributor availability - making RCLAMP0502BATCT optimal for thermally demanding, high-reliability 22V bus protection.
Availability
RCLAMP0502BATCT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and 22V IoT power bus designs requiring stable component supply, long-term lifecycle support, and guaranteed compliance with IEC 61000-4-2/4-4/4-5.
Supply support for RCLAMP0502BATCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
RCLAMP0502BATCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-voltage, high-energy EOS protection applications where clamping stability across temperature and current is critical.
FAQ
What is the clamping voltage of RCLAMP0502BATCT at 40A surge current?
RCLAMP0502BATCT clamps at 27.5–28 V under IEC 61000-4-5 combination waveform (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A peak pulse current. This value is guaranteed across −40°C to +125°C and reflects its FET-based architecture, which maintains near-constant clamping unlike traditional TVS diodes.
Does RCLAMP0502BATCT meet IEC 61000-4-2 ESD requirements?
Yes, RCLAMP0502BATCT delivers ±30 kV contact discharge and ±30 kV air discharge immunity per IEC 61000-4-2. This performance is achieved through its integrated trigger circuit and low-capacitance FET structure, making it suitable for direct placement at USB Type-C connectors and other ESD-prone interfaces.
What is the package type and pin configuration of RCLAMP0502BATCT?
RCLAMP0502BATCT uses a 6-pin DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm. Pins 1–3 are GND terminals; Pins 4–6 are IN terminals. All six pins must be soldered - parallel grounding and input connections are required to achieve rated 40A surge capability and minimize parasitic inductance.
How does RCLAMP0502BATCT differ from standard TVS diodes in surge response?
RCLAMP0502BATCT uses a surge-rated FET and precision trigger circuit instead of a PN junction. This yields flat clamping voltage (27.5–28 V) across 24–40A and −40°C to +125°C, whereas standard TVS diodes show rising VC with IPP and temperature due to fixed dynamic resistance. RCLAMP0502BATCT also dissipates energy in the FET channel rather than the junction, improving thermal reliability.
Can RCLAMP0502BATCT be used for protecting USB Type-C VBUS lines?
Yes, RCLAMP0502BATCT is explicitly validated for USB Type-C PD VBUS protection in Semtech's reference designs. Its 22V working voltage matches USB PD's 20V nominal/22V max specification, and its 28V clamping ensures safety margins for 24V-rated PD controllers - even under worst-case 125°C ambient and 40A surge conditions.
RCLAMP0502BATCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SC-75, SOT-416
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 125W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1.2pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75 (SOT523)
RCLAMP0502BATCT FAQ
1.How can I place an order for RCLAMP0502BATCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0502BATCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RCLAMP0502BATCT reliable?
The price and inventory of RCLAMP0502BATCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0502BATCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0502BATCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0502BATCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0502BATCT?
RCLAMP0502BATCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0502BATCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RCLAMP0502BATCT?
For technical support, including RCLAMP0502BATCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0502BATCT requirements.
6.How does Aetrix verify that RCLAMP0502BATCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0502BATCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RCLAMP0502BATCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0502BATCT?
All RCLAMP0502BATCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0502BATCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RCLAMP0502BATCT part is unused and in its original packaging.
Return procedure for RCLAMP0502BATCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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